DV out issue with Decklink Extreme in Pro Tools

I am using decklink extreme 4K with Pro tools ver 10.3 . I used to import DV PAL in ProTools as reference video . The video out of card is connected to HDMI monitor ( Panasonic) . When I used play DV video,it is playing with lot of aliase edges,many times i could not see face, lips of actors. I have card driver with latest version. I have tried another card, different video but result is same .Please let me know solution for the same
Thanks in advance .
-Rahulpp